QuickDefJoin WaitlistKindle-Style Dictionaryfor English Learners
Stop switching tabs to look up words. Double-click any word (even in PDFs) for instant, simple definitions.
Lookups per hour
Why English Learners Struggle
Existing tools create more problems than they solve for language learners.
Google Dictionary Doesn't Work on PDFs
Browser extensions fail when you're reading research papers, ebooks, or documents in PDF format.
Definitions Are Too Complex for Learners
Traditional dictionaries use advanced vocabulary to explain words, making it harder for non-native speakers.
Switching Tabs Breaks Your Reading Flow
Opening a new tab, typing the word, reading the definition, then returning kills your concentration.
No Easy Way to Save and Review Words
You look up the same words repeatedly because there's no system to track and study what you've learned.
How We Solving This
We're building a simple, focused solution designed specifically for English learners.
Works Everywhere
Web pages, PDFs, Google Docs – QuickDef works seamlessly across all your reading environments.
Simple Definitions
Explanations written specifically for English learners using basic vocabulary you already know.
Instant Popup
Double-click any word and see the definition instantly – just like Kindle. No tab switching required.
Built-in Flashcards
Words you look up are automatically saved. Review them with simple flashcards (no Anki setup needed).
Free to Start
Use QuickDef immediately at no cost. Upgrade to Premium only when you need advanced features.
Get Early Access to QuickDef
Be among the first to know when we launch. Early supporters get lifetime beta access.